By the early 1960s, Papapolitis & Papapolitis has become one of the largest and most preeminent firms in Greece, with a corporate culture and work ethic modelled on those adopted by the US firms, which proved highly innovative in the Greek market. The Firm counts major shipping companies and corporations among its clients and gains a reputation for the “Papapolitis School of Thought”. The regime of the Colonels takes power in Greece and Papapolitis & Papapolitis acts in the landmark case for the Judges of the Supreme Court of Greece.